safemood/discountify

Laravel package for dynamic discounts with custom conditions.

Define Conditions

use Illuminate\Support\ServiceProvider;
use Safemood\Discountify\Facades\Condition;
use Carbon\Carbon;
 
class AppServiceProvider extends ServiceProvider
{
    public function boot()
    {
        // If items are more than 2, apply a 10% discount.
        Condition::define('more_than_2_products_10', fn (array $items) => count($items) > 2, 10)
            // If the date is within a 7-day interval starting March 1, 2024, apply a 15% discount.
            ->add([
                [
                    'slug' => 'promo_early_spring_sale_2024',
                    'condition' => fn ($items) => now()->between(
                        Carbon::createFromDate(2024, 3, 1),
                        Carbon::createFromDate(2024, 3, 15)->addDays(7)
                    ),
                    'discount' => 15,
                ],
                // If 'special' items are in the cart, apply a 10% discount.
                [
                    'slug' => 'special_type_product_10',
                    'condition' => fn ($items) => in_array('special', array_column($items, 'type')),
                    'discount' => 10,
                ],
            ])
            // If the user has a renewal, apply a 10% discount.
            ->defineIf('client_has_renewal_10', auth()->user()->hasRenewal(), 10);
    }
}

Set Items, Global Discount, and Tax Rate

$items = [
        ['id' => '1', 'quantity' => 2, 'price' => 50],
        ['id' => '2', 'quantity' => 1, 'price' => 100, 'type' => 'special'],
    ];
 
// Set the items in the cart
Discountify::setItems($items)
 
// Set a global discount for all items in the cart
    ->setGlobalDiscount(15)
 
// Set a global tax rate for all items in the cart
    ->setGlobalTaxRate(19);

Calculate Total Amounts

// Calculate the total amount considering the set conditions and discounts
 
$total = Discountify::total();
 
// Calculate total amount with detailed breakdown
// (array contains total, subtotal, tax amount, total after discount, savings, tax rate, discount rate)
$total = Discountify::totalDetailed();
 
// Calculate the total amount with the applied global discount
 
$totalWithDiscount = Discountify::totalWithDiscount();
 
// Calculate the total amount with taxes applied based on the set global tax rate
 
$totalWithTaxes = Discountify::tax();
 
// Calculate the total tax amount based on the given tax rate (19 in this case) (before discounts)
 
$taxAmount = Discountify::taxAmount(19);
 
// Calculate tax amount with tax applied after discounts
 
$taxAmount = Discountify::calculateTaxAmount(19, true);
 
// Calculate the amount saved
$savings = Discountify::savings();